Compute Module • How does GLOBAL_EN work?

Hello, for my project I need a button (not switch, SPST) that when pressed turns on the CM4 and when pressed again turns it off.
The Pins I have been looking at are GLOBAL_EN and RUN_PG.

Q1: I think RUN_PG effectively just restarts the CM4 so that's not what I need. Is that correct?

I read the datasheet of the CM4 but I'm still confused.
Q2: If I pull down this PIN and then pull it up again, does the CM4 shut down and stay like that or does it turns back on?
Q3: When it's in a turned off state you pull the pin LOW to turn it on again. Does it have to be kept pulled low or not to keep the CM4 on?

Also I would like the CM4 to not turn on the moment it gets power but only after the button was pressed once.
Q4: Any recommendations on how to do that?

Thanks for any help in advance!

Statistics: Posted by illesbalog — Sun May 19, 2024 6:12 pm

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